I ASKED before but no answer that I can remember- are there any muzzle brakes or compensators (BUT NOT FLASH HIDERS) that work for non threaded barrels? I live in NJ and cannot have flash hiders nor threaded barrels, but would not mind a decorative and tacticool / blacktical ( if not at all? functional?) muzzle device... the only thing so far I can see is a $100+ fugazy suppressor.. maybe I'll do this but would not mind a cool muzzle device / brake / compensation devvice.